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Re: [PATCH v2] xfs: Simplify xfs_ail_min() with list_first_entry_or_null

To: Jeff Liu <jeff.liu@xxxxxxxxxx>
Subject: Re: [PATCH v2] xfs: Simplify xfs_ail_min() with list_first_entry_or_null()
From: Ben Myers <bpm@xxxxxxx>
Date: Fri, 23 Aug 2013 13:06:30 -0500
Cc: "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <520C6253.6080809@xxxxxxxxxx>
References: <520C6253.6080809@xxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-06-14)
On Thu, Aug 15, 2013 at 01:08:35PM +0800, Jeff Liu wrote:
> From: Jie Liu <jeff.liu@xxxxxxxxxx>
> 
> At xfs_ail_min(), we do check if the AIL list is empty or not before
> returning the first item in it with list_empty() and list_first_entry().
> 
> This can be simplified a bit with a new list operation routine that is
> the list_first_entry_or_null() which has been introduced by:
> 
> commit 6d7581e62f8be462440d7b22c6361f7c9fa4902b
>     list: introduce list_first_entry_or_null
> 
> v2: make xfs_ail_min() as a static inline function and move it to
>     xfs_trans_priv.h as per Dave Chinner's comments.
> 
> Signed-off-by: Jie Liu <jeff.liu@xxxxxxxxxx>

Reviewed-by: Ben Myers <bpm@xxxxxxx>

Applied.  Thanks Jeff.

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